CN102171412B - Method and apparatus for lining tunnel walls or ceilings with protective nets - Google Patents

Method and apparatus for lining tunnel walls or ceilings with protective nets Download PDF

Info

Publication number
CN102171412B
CN102171412B CN200980138640.6A CN200980138640A CN102171412B CN 102171412 B CN102171412 B CN 102171412B CN 200980138640 A CN200980138640 A CN 200980138640A CN 102171412 B CN102171412 B CN 102171412B
Authority
CN
China
Prior art keywords
spool
tunnel
axle
protective screening
screening material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN200980138640.6A
Other languages
Chinese (zh)
Other versions
CN102171412A (en
Inventor
沙恩·布罗恩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rock Engineering Aust Pty Ltd
Geobrugg AG
Original Assignee
Rock Engineering Aust Pty Ltd
Geobrugg AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2008904072A external-priority patent/AU2008904072A0/en
Application filed by Rock Engineering Aust Pty Ltd, Geobrugg AG filed Critical Rock Engineering Aust Pty Ltd
Publication of CN102171412A publication Critical patent/CN102171412A/en
Application granted granted Critical
Publication of CN102171412B publication Critical patent/CN102171412B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00Provisional protective covers for working space
    • E21D19/04Provisional protective covers for working space for use in drifting galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14Lining predominantly with metal
    • E21D11/15Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
    • E21D11/152Laggings made of grids or nettings
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/381Setting apparatus or devices
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/40Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
    • E21D11/406Placing endless lining elements, e.g. from reels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Tents Or Canopies (AREA)
  • Earth Drilling (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

In a method for lining tunnel walls or ceilings with protective nets or the like, web-shaped protective net material (8) is unwound from a reel (7) and is fastened to the tunnel walls or ceiling by means of tie bolts. The reel (7) is rotatably arranged. The rotation of the reel (7) about a shaft (30) is controlled in order to unwind the protective net material (8), the shaft (30) being mechanically moved in steps along the tunnel walls or ceiling together with the reel (7). The protective net material (8) unwound in each step is preferably stretched and mechanically fastened. The individuals carrying out said processes are thus not exposed to any direct risk, while the lining process can be accelerated.

Description

With the method and apparatus on protective screening trimmed tunnel wall or top, tunnel
Technical field
The present invention relates to a kind of method and a kind of equipment of implementing described method with protective screening trimmed tunnel wall or top, tunnel.
Background technology
Be known that the protective screening trimmed tunnel that preferred employing is made by steel wire, as mining tunnel.Netted protective screening launches and is fixed on tunnel wall or top, tunnel by tie bolt from spool.Conventionally use elevating stage or similar device expansion protection net materials.This heavy reels operating difficulties, and bring much danger to workman.
Summary of the invention
Forming the object of foundation of the present invention is propose a kind of method of type mentioned above and a kind of equipment of implementing the method is provided, by the method and this equipment can simplify the operation widely, hoisting velocity strengthen implementation personnel's safety.
A kind of method with protective screening or similar material trimmed tunnel wall or top, tunnel, wherein netted protective screening material (8) launches from spool (7), it is characterized in that the rotatable setting of described spool (7) is to launch described protective screening material (8), rotatablely moving of described spool (7) is controlled, and described spool (7) is along described tunnel wall or top, tunnel Mechanical Moving;
Described in described spool (7), rotatablely move and control by the hold-down roller (41) engaging with spool surface (79), described hold-down roller (41) is controlled and is rotatably driven and move radially to described spool (7) by guiding.
A kind of for implementing the equipment of method according to claim 1, it is characterized in that the support (11) for fixed axis (30), there is the described spool (7) of described netted protective screening material (8) with respect to the rotatable setting of described axle (30), be further characterized in that for controlling described spool (7) and with described spool (7), along described tunnel wall or tunnel, push up progressively mobile device around the device rotatablely moving (40) of described axle (30) and for the support (11) that will hold described axle (30);
For by the support (11) that holds described axle (30) with described spool (7) along described tunnel wall or top, tunnel progressively mobile described device by one end connect main frame (1), movable expanding arm (2) forms, described axle (30) is in substantially parallel relationship to described tunnel wall or tunnel top and extends, and with the moving direction crosscut of described moveable arm (2).
The preferred theme that has formed dependent claims of the present invention that further improves of method of the present invention and equipment of the present invention.
Method of pushing up with protective screening trimmed tunnel wall or tunnel of the present invention and the equipment of the invention process the method can make the simple to operate and accurate of protective screening material heavy reels, and the simple accurately machinery that can realize expansion and fixation procedure is implemented, for example, by main frame (for example, tradition jumbo) control machinery implement, can, to implementing the directly danger of personnel component of said process, greatly not strengthen safety like this.
Below will the present invention be described in more detail by accompanying drawing.Accompanying drawing is as follows:
Accompanying drawing explanation
Fig. 1 is that this main frame is furnished with equipment and the anchoring device of expansion protection net materials from spool with the phantom drawing of the main frame on protective screening trimmed tunnel wall or top, tunnel;
Fig. 2 is the elevation for the equipment of expansion protection net materials;
Fig. 3 is the lateral view of Fig. 2 apparatus shown;
Fig. 4 is as the parts of Fig. 2 apparatus shown and the clamping device in closure state;
Fig. 5 is a part for clamping device shown in the Fig. 4 in open mode.
The specific embodiment
Fig. 1 has shown the main frame 1 with protective screening trimmed tunnel wall or top, tunnel of the present invention.One end of movable expanding arm 2 is connected to main frame 1, and the other end has the equipment 10 for launch netted protective screening material 8 from spool 7.Equipment 10(will below describe in more detail according to Fig. 2 to Fig. 5) can along tunnel wall or tunnel top, progressively move by telescopic arm 2, spool 7 is parallel with tunnel wall or top, tunnel cardinal principle, and with the moving direction crosscut of telescopic arm 2.The protective screening material 8 of stepwise development is fixed on tunnel wall by anchoring device 4 or top, tunnel is upper, and anchoring device 4 is supported by another movable expanding arm 3 of main frame 1.
Like this, first the position over half of the first side wall in for example tunnel can cover netted protective screening material 8, and is screwed into corresponding tie bolt by anchoring device 4; Then by telescopic arm 2 lift apparatus 10, another part of expansion protection net materials 8 is also fixed.Continue this process until top, tunnel and another sidewall also cover protective screening material 8.
Then according to the net width of protective screening material 8, in tunnel, vertically move main frame 1, further to cover other parts in tunnel.The favourable part of main frame 1 is to be furnished with applicable chassis.
Equipment 10 for launch netted protective screening material 8 from spool 7 is now described.Netted protective screening material 8 twists on the pipe 6 in spool 7.Pipe 6 in spool 7 is rotatably fixed in support 11 around axis of rotation A.According to Fig. 2, support 11 comprises that pedestal 14(comprises top 12 and bottom 13, comprise if desired inclination lateral parts 15 upward) and two support arms that stretch out from pedestal 20, the free end of support arm is provided with the device that forms axis of rotation A and pass the end 31 of the axle 30 of pipe 6 for fixing.According to the illustrative examples shown in Fig. 3 and Fig. 5, these devices are comprised of a pair of jaw 22 that can transfer closure state to from open mode respectively.Axle 30 is provided with two flipper guides 33, and flipper guide and clamping device cooperatively interact, and helps axle 30 to fixedly secure in jaw 22.
The first end 52 of jaw 22 respectively pivot knuckles to support arm 20(pivot 51 separately) hollow component 21 on, and jaw 22 can rotatably move by the public Linear actuator being arranged in hollow component 21.Be preferably in hollow component 21 shell 64 with hydraulic piston/cylinder group 63 is set, by hydraulic piston/cylinder group 63, can operate tooth bar 61, tooth bar 61 makes jaw 22 transfer closure state to from open mode by gear 60 separately, and vice versa.
The second end 54 of jaw 22 is provided with recess 53 separately, and between recess 53, the end 31 of axle 30 is clipped in the make position of jaw 22.Common space 56(Fig. 4 that forms rhombus or square-section of recess 53).
In addition, each jaw 22 has extension or protuberance 57 between its first end 52 and recess 53.Protuberance 57 oppositely extends each other, makes jaw 22 shown in Fig. 5 when open mode, forms the bearing surface of the end of clamped axle 30 31 58.After jaw 22 closures, the end 31 of axle 30 imports recess 53 or space 56.Protuberance 57 expands to side, makes its far-end 59 overlap the open position (Fig. 5) of jaw 22.When closure state, space 56 correspondences of two pairs of jaws, axle 30 is parallel to the pedestal 14 of support 11 like this.As mentioned above, while transferring jaw 22 to closure state from open mode, axle 30 will self-centering or location automatically.
Of the present inventionly for the equipment 10 that launches netted protective screening material 8, be separately provided with device 40, for controlling spool 7 around axis of rotation A or fixedly securing rotatablely moving of the axle 30 that puts in place.
According to the illustrative examples shown in Fig. 2, device 40 comprises and engaging with spool surface 79 and the hold-down roller 41 of (the being preferably hydraulic pressure) drive motors 42 that is operably connected.The axis of rotation (can also be rim or gear etc.) of hold-down roller 41 is set to parallel with axle 30.The drive motors 42 that compressing roller 41 is housed is arranged on platform 43, and platform 43 is arranged on the pedestal 14 of support 11 movably, to fixedly secure axle 30.For mobile platform 43 also moves radially hold-down roller 41 thus to spool 7, at least one preferred hydraulic piston/cylinder group is arranged in shell 44.Another shell 46 comprises various work and the safety element of hydraulic piston/cylinder group and drive hydraulic motor 42.
Can hold-down roller 41 be contacted with spool surface 79 by mobile platform 43 and external zones 45 thereof, the center of contact spool 7 be more favourable.Rotatably drive hold-down roller 41, make protective screening material 8 controlled deployments, or stop the rotation of hold-down roller 41 and prevent launch.After expansion, reel diameter reduces, and hold-down roller, by piston/cylinder group automated movement, always contacts it with spool surface 79.Therefore, while needing, hold-down roller 41 and for controlling that whole device 40 that spool 7 rotatablely moves can be used for the controlled deployment of protective screening material 8 and as the check mechanism that acts on spool 7.
Except piston/cylinder group, also can adopt other devices (as spring element) to carry out automated movement hold-down roller.
Except jaw 22, also can adopt other device fixed axis 30.Except axle 30, spool self can preferably be formed by the coaxial side shaft of its both sides.
Method with protective screening trimmed tunnel wall or tunnel top of the present invention and heavy reels simple to operate and accurate that can make protective screening material for implementing the equipment of this method of the present invention, and the simple accurately machinery that can realize expansion and fixation procedure is implemented, for example, machinery by host computer control is implemented, so can be directly not dangerous to the personnel component of implementation, and can greatly strengthen safety.

Claims (11)

1. the method with protective screening or similar material trimmed tunnel wall or top, tunnel, wherein netted protective screening material (8) launches from spool (7), it is characterized in that the rotatable setting of described spool (7) is to launch described protective screening material (8), rotatablely moving of described spool (7) is controlled, and described spool (7) is along described tunnel wall or top, tunnel Mechanical Moving;
Described in described spool (7), rotatablely move and control by the hold-down roller (41) engaging with spool surface (79), described hold-down roller (41) is controlled and is rotatably driven and move radially to described spool (7) by guiding.
2. method according to claim 1, is characterized in that the described protective screening material (8) progressively launching launches and is fixed on described tunnel wall or top, tunnel.
3. method according to claim 1 and 2, the axle (30) that it is characterized in that described spool (7) is implemented along the movable expanding arm (2) that progressively moves through on described tunnel wall or top, tunnel with described spool (7), one end of described telescopic arm (2) is connected to main frame (1), the other end supports described axle (30) and described spool (7), described axle (30) and described tunnel wall or top, tunnel are substantially parallel, and with the moving direction crosscut of described telescopic arm (2);
Described main frame (1) progressively vertically moves in tunnel according to the net of described protective screening material (8) is wide;
Described main frame (1) supports another movable expanding arm (3) with anchoring device (4), and described anchoring device (4) is for being connected and fastened bolt or similar fastener or the protective screening material (8) for fixing described expansion.
4. method according to claim 3, is characterized in that before fixing the protective screening material (8) that can launch by described anchoring device (4) described expansion.
5. method according to claim 3, it is characterized in that the described protective screening material (8) progressively launching is controlled use anchoring device (4) by guiding fixing, described anchoring device (4) is supported by another movable expanding arm (3) being arranged on described main frame (1).
6. one kind for implementing the equipment of method according to claim 1, it is characterized in that the support (11) for fixed axis (30), there is the described spool (7) of described netted protective screening material (8) with respect to the rotatable setting of described axle (30), be further characterized in that for controlling described spool (7) and with described spool (7), along described tunnel wall or tunnel, push up progressively mobile device around the device rotatablely moving (40) of described axle (30) and for the support (11) that will hold described axle (30);
For by the support (11) that holds described axle (30) with described spool (7) along described tunnel wall or top, tunnel progressively mobile described device by one end connect main frame (1), movable expanding arm (2) forms, described axle (30) is in substantially parallel relationship to described tunnel wall or tunnel top and extends, and with the moving direction crosscut of described moveable arm (2).
7. equipment according to claim 6, it is characterized in that described support (11) comprises pedestal (14) and two support arms (20) that stretch out from described pedestal (14), the free end of described support arm (20) is provided with the device of the end (31) for holding and fix described axle (30).
8. according to the equipment of claim 7, the free end that it is characterized in that being arranged on described support arm (20) is used for holding and the described device of fixing the described end (31) of described axle (30) consists of a pair of jaw (22) that can transfer closure state to from open mode respectively.
9. equipment according to claim 8, it is characterized in that first end (52) the difference pivot knuckles of described jaw (22) is to the hollow component (21) of support arm (20) separately, and can rotatably move by the public Linear actuator (63,61) being arranged in described hollow component (21), the second end (54) at described jaw (22) is respectively equipped with recess (53), between described recess (53), the described end (31) of described axle (30) is clipped in the make position of described jaw (22).
10. equipment according to claim 9, is characterized in that being respectively equipped with protuberance (57) separately between the described two ends (52,54) of described jaw (22).
11. according to the equipment described in claim 6 to 10 any one, it is characterized in that user controls described spool (7) and consists of the hold-down roller (41) engaging with the spool surface (79) of described spool (7) around the device rotatablely moving (40) of described axle (30), described hold-down roller (41) may be operably coupled to drive motors (42) and moves radially to described spool (7).
CN200980138640.6A 2008-08-08 2009-07-24 Method and apparatus for lining tunnel walls or ceilings with protective nets Active CN102171412B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2008904072A AU2008904072A0 (en) 2008-08-08 Mesh Reel Handling Assembly
AU2008904072 2008-08-08
PCT/EP2009/005392 WO2010015339A2 (en) 2008-08-08 2009-07-24 Method and apparatus for lining tunnel walls or ceilings with protective nets

Publications (2)

Publication Number Publication Date
CN102171412A CN102171412A (en) 2011-08-31
CN102171412B true CN102171412B (en) 2014-04-30

Family

ID=41600717

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200980138640.6A Active CN102171412B (en) 2008-08-08 2009-07-24 Method and apparatus for lining tunnel walls or ceilings with protective nets

Country Status (16)

Country Link
US (1) US8662796B2 (en)
EP (1) EP2324200B1 (en)
JP (1) JP5457453B2 (en)
CN (1) CN102171412B (en)
AU (2) AU2009278321C1 (en)
BR (1) BRPI0917441B1 (en)
CA (1) CA2733473C (en)
CL (1) CL2009002083A1 (en)
ES (1) ES2687041T3 (en)
MX (1) MX2011001444A (en)
PE (1) PE20110655A1 (en)
PL (1) PL2324200T3 (en)
PT (1) PT2324200T (en)
RU (1) RU2521007C2 (en)
WO (1) WO2010015339A2 (en)
ZA (1) ZA201100939B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9194231B2 (en) * 2012-08-17 2015-11-24 J.H. Fletcher & Co. Mesh handling apparatus and related methods
US9187873B2 (en) * 2013-04-02 2015-11-17 1311854 Ontario Limited Screen-handling system and method of installing screening on a rock face
CN104278995B (en) * 2014-09-18 2017-02-22 中国煤炭科工集团太原研究院有限公司 Automatic anchoring net connecting device for underground coal mine
DK3436665T3 (en) 2016-03-30 2022-09-26 Foamrox As Tunnel wall element and method for assembling tunnel walls comprising the tunnel wall elements
WO2017207712A1 (en) 2016-06-03 2017-12-07 Inchalam Sa - Industrias Chilenas De Alambre Method and apparatus for lining tunnel surface with protective nets
WO2018104140A1 (en) 2016-12-08 2018-06-14 Nv Bekaert Sa Deployment and positioning device for protective net
CN106837387B (en) * 2017-04-21 2018-09-21 中国矿业大学 A kind of installation apparatus and its application method of roadway support prestressed anchor net
US10837589B2 (en) * 2017-05-10 2020-11-17 Sipp Technologies, Llc Taping apparatus, system and method for pipe lining applications
AU2017418154B2 (en) * 2017-06-12 2024-02-15 Sandvik Intellectual Property Ab Roof mesh installation apparatus
NO345341B1 (en) 2017-09-22 2020-12-21 Foamrox As A tunnel profile element and a method of assembling a tunnel profile element.
AU2019200996B1 (en) * 2019-02-13 2020-05-07 Geobrugg Ag A method for mounting a roll of protective mesh material to an underground rock drilling machine, a method for attaching protective mesh material to a rock surface and a mounting device
WO2021008773A1 (en) 2019-07-15 2021-01-21 Nv Bekaert Sa Roll of chain link steel wire mesh with marks and method of producing such a roll
WO2021008772A1 (en) 2019-07-15 2021-01-21 Nv Bekaert Sa Package of steel wire mesh, method and apparatus for installing it against tunnel walls
WO2021008771A1 (en) 2019-07-15 2021-01-21 Nv Bekaert Sa Apparatus for unwinding a roll of web-like material
CN113123805B (en) * 2021-04-24 2023-05-09 淮北市平远软岩支护工程技术有限公司 Novel supporting method for coping with rock burst and net-knitting equipment
DE102022110418A1 (en) 2022-04-28 2023-11-02 Geobrugg Ag Device for providing braids, system with the device and method for providing braids

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281978B (en) * 1965-04-21 1968-11-07 Karl Maria Groetschel Dipl Ing Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations
DE1924749A1 (en) * 1969-05-14 1970-11-26 Isolier Und Terrassenbau Gmbh Machine for applying webs in rolls
SU404945A1 (en) * 1971-05-24 1973-10-22 К. М. Стрельников, В. Ю. Изаксон , В. В. Фомин Кузбасский политехнический институт DEVICE FOR OVERLAPPING THE ROOF OVER THE PASSAGE COMBINE
US3902614A (en) * 1971-08-27 1975-09-02 Alvin M Roberts Jack-actuated crane tongs
DE2836659C3 (en) * 1978-08-22 1982-04-15 Wolfgang Dipl.-Ing. 3000 Hannover Ebeling Combination drilling jig
GB2046823B (en) * 1979-04-17 1983-03-16 Groetschel Karl Maria Methods of and apparatus for supporting the roof of a mine working
DE2945082C2 (en) 1979-11-08 1981-10-22 Groetschel, Karl Maria, Dipl.-Ing., 8000 München Mat laying device
SU889861A1 (en) * 1980-01-08 1981-12-15 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт Device for covering roof with web material
SU1055884A2 (en) * 1980-06-11 1983-11-23 Комплексный Отдел Института Горного Дела Со Ан Ссср Apparatus for supporting dome-roof mine working with roof bolts
US5816750A (en) * 1996-10-04 1998-10-06 The Tensar Corporation Automatic grid layout system
DE102004014873B4 (en) * 2004-03-26 2007-05-03 Rag Ag Method and device for introducing a route construction
US20070176158A1 (en) * 2006-02-01 2007-08-02 Robinson Jeffery A Portable safety barrier

Also Published As

Publication number Publication date
MX2011001444A (en) 2011-06-20
ES2687041T3 (en) 2018-10-23
PE20110655A1 (en) 2011-09-16
PT2324200T (en) 2018-10-18
AU2009278321B2 (en) 2016-01-07
JP2012504713A (en) 2012-02-23
WO2010015339A2 (en) 2010-02-11
RU2011108584A (en) 2012-09-20
RU2521007C2 (en) 2014-06-27
US8662796B2 (en) 2014-03-04
CN102171412A (en) 2011-08-31
CL2009002083A1 (en) 2010-06-18
US20110150575A1 (en) 2011-06-23
ZA201100939B (en) 2012-05-30
BRPI0917441B1 (en) 2019-07-16
BRPI0917441A2 (en) 2015-12-01
WO2010015339A3 (en) 2010-04-01
EP2324200B1 (en) 2018-07-18
CA2733473A1 (en) 2010-02-11
CA2733473C (en) 2016-11-22
AU2009208073A1 (en) 2010-02-25
AU2009278321C1 (en) 2016-05-12
JP5457453B2 (en) 2014-04-02
PL2324200T3 (en) 2018-12-31
EP2324200A2 (en) 2011-05-25
AU2009278321A1 (en) 2010-02-11

Similar Documents

Publication Publication Date Title
CN102171412B (en) Method and apparatus for lining tunnel walls or ceilings with protective nets
US20030155154A1 (en) System and method for transferring pipe
US4138876A (en) Truck frame alignment apparatus
JP2824641B1 (en) Equipment for holding and lifting loads
CN101137806A (en) Work platform
JP2007523023A (en) Device for moving the platform along the guide rails of the elevator
RU2676155C2 (en) Device for handling parent reels at paper converting plants
CN116516837A (en) Prefabricated box girder paving device and paving method
CN114560385A (en) Industrial factory building steel structure hoisting device and construction method thereof
CA2898701C (en) Process and apparatus for forming a coil of scrap tubing
KR101479866B1 (en) Reverse apparatus for dismantling waste vehicle
CN206753521U (en) Turnbuckle clamp
CN110077934B (en) Construction device and construction method thereof in elevator subsection hoistway
CN211733263U (en) Pneumatic manipulator for waterproof coiled material coiling roller
JP4157859B2 (en) Heavy material interception method
CN209367731U (en) A kind of portable cord adjustment device for wirerope adjustment mechanism
CN111810759A (en) Drainage pipeline plugging device
CN104535428A (en) Safety protecting device for ultrahigh-pressure water pressure test of downhole tool
CN113620196B (en) Braking device for vertical direction of crane and working method thereof
CN107825396A (en) A kind of electric operating carries the robot of high-tension porcelain insulator
CN220976269U (en) Automatic lifting device for paper tubes
CN220245358U (en) Hoisting and transferring device for steel structure building
CN218575616U (en) I-steel preprocessing auxiliary device
CN215974711U (en) Well lid opening tool for underground operation
JP5643494B2 (en) Heavy work lifting device

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant